{"id":242,"date":"2026-10-22T23:08:44","date_gmt":"2026-10-22T23:08:44","guid":{"rendered":"https:\/\/rf-diy.com\/?p=242"},"modified":"2026-10-22T23:30:51","modified_gmt":"2026-10-22T23:30:51","slug":"rf-hf-filter-calculator","status":"publish","type":"post","link":"https:\/\/rf-diy.com\/index.php\/en\/2026\/10\/22\/rf-hf-filter-calculator\/","title":{"rendered":"RF HF Filter calculator"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Let&rsquo;s go to desgin RF filters for our HF station.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A user guide is available on this page if needed:<a href=\"https:\/\/rf-diy.com\/index.php\/en\/2026\/10\/22\/user-guide-the-hf-filter-calculator\/\" data-type=\"post\" data-id=\"244\"> HF Filter Calculator User Guide.<\/a><\/p>\n\n\n<div class=\"fhf\" data-fhf data-lang=\"\" data-shop=\"{&quot;shop&quot;:&quot;digikey&quot;,&quot;site&quot;:&quot;auto&quot;,&quot;custom&quot;:&quot;&quot;}\">\n  <header class=\"fhf-head\">\n    <div>\n      <h2 class=\"fhf-title\" data-tr>Calcul de filtres HF<\/h2>\n      <p class=\"fhf-lead\" data-tr>Filtres LC, diplexeurs et triplexeurs. Valeurs, sch\u00e9ma, courbe et tenue en puissance se recalculent \u00e0 chaque modification.<\/p>\n    <\/div>\n    <div class=\"fhf-head-tools\">\n      <div class=\"fhf-langs\" role=\"group\" aria-label=\"Langue \/ Language\">\n      <button type=\"button\" class=\"fhf-flag\" data-act=\"lang\" data-lang-btn=\"fr\" title=\"Fran\u00e7ais\" aria-label=\"Fran\u00e7ais\" aria-pressed=\"false\"><svg viewBox=\"0 0 3 2\" aria-hidden=\"true\"><rect width=\"1\" height=\"2\" fill=\"#002395\"\/><rect x=\"1\" width=\"1\" height=\"2\" fill=\"#fff\"\/><rect x=\"2\" width=\"1\" height=\"2\" fill=\"#ED2939\"\/><\/svg><\/button>\n      <button type=\"button\" class=\"fhf-flag\" data-act=\"lang\" data-lang-btn=\"en\" title=\"English\" aria-label=\"English\" aria-pressed=\"false\"><svg viewBox=\"0 0 60 30\" aria-hidden=\"true\"><rect width=\"60\" height=\"30\" fill=\"#012169\"\/><path d=\"M0,0 L60,30 M60,0 L0,30\" stroke=\"#fff\" stroke-width=\"6\"\/><path d=\"M0,0 L30,15 M60,0 L30,15 M0,30 L30,15 M60,30 L30,15\" stroke=\"#C8102E\" stroke-width=\"2\"\/><path d=\"M30,0 v30 M0,15 h60\" stroke=\"#fff\" stroke-width=\"10\"\/><path d=\"M30,0 v30 M0,15 h60\" stroke=\"#C8102E\" stroke-width=\"6\"\/><\/svg><\/button>\n      <button type=\"button\" class=\"fhf-flag\" data-act=\"lang\" data-lang-btn=\"de\" title=\"Deutsch\" aria-label=\"Deutsch\" aria-pressed=\"false\"><svg viewBox=\"0 0 5 3\" aria-hidden=\"true\"><rect width=\"5\" height=\"1\" fill=\"#000\"\/><rect y=\"1\" width=\"5\" height=\"1\" fill=\"#DD0000\"\/><rect y=\"2\" width=\"5\" height=\"1\" fill=\"#FFCE00\"\/><\/svg><\/button>\n      <button type=\"button\" class=\"fhf-flag\" data-act=\"lang\" data-lang-btn=\"es\" title=\"Espa\u00f1ol\" aria-label=\"Espa\u00f1ol\" aria-pressed=\"false\"><svg viewBox=\"0 0 750 500\" aria-hidden=\"true\"><rect width=\"750\" height=\"500\" fill=\"#AA151B\"\/><rect y=\"125\" width=\"750\" height=\"250\" fill=\"#F1BF00\"\/><\/svg><\/button>\n      <\/div>\n      <button type=\"button\" class=\"fhf-btn fhf-btn-main\" data-act=\"pdf\" data-tr>Exporter en PDF<\/button>\n    <\/div>\n  <\/header>\n\n  <div class=\"fhf-layout\">\n    <form class=\"fhf-controls\" aria-label=\"Param\u00e8tres\" onsubmit=\"return false\">\n      <fieldset class=\"fhf-field\">\n        <legend data-tr>Montage<\/legend>\n        <div class=\"fhf-seg \"><label><input type=\"radio\" name=\"fhf1-mode\" data-k=\"mode\" value=\"filter\" checked><span data-tr>Filtre<\/span><\/label><label><input type=\"radio\" name=\"fhf1-mode\" data-k=\"mode\" value=\"dip\"><span data-tr>Diplexeur<\/span><\/label><label><input type=\"radio\" name=\"fhf1-mode\" data-k=\"mode\" value=\"trip\"><span data-tr>Triplexeur<\/span><\/label><\/div>      <\/fieldset>\n\n      <fieldset class=\"fhf-field\" data-when=\"filter\">\n        <legend data-tr>Type<\/legend>\n        <div class=\"fhf-seg fhf-seg-grid\"><label><input type=\"radio\" name=\"fhf1-type\" data-k=\"type\" value=\"lp\" checked><span data-tr>Passe-bas<\/span><\/label><label><input type=\"radio\" name=\"fhf1-type\" data-k=\"type\" value=\"hp\"><span data-tr>Passe-haut<\/span><\/label><label><input type=\"radio\" name=\"fhf1-type\" data-k=\"type\" value=\"bp\"><span data-tr>Passe-bande<\/span><\/label><label><input type=\"radio\" name=\"fhf1-type\" data-k=\"type\" value=\"bs\"><span data-tr>Coupe-bande<\/span><\/label><\/div>      <\/fieldset>\n\n      <fieldset class=\"fhf-field\" data-when=\"filter:bp\">\n        <legend data-tr>R\u00e9alisation<\/legend>\n        <div class=\"fhf-seg \"><label><input type=\"radio\" name=\"fhf1-bpstyle\" data-k=\"bpstyle\" value=\"lc\" checked><span data-tr>LC classique<\/span><\/label><label><input type=\"radio\" name=\"fhf1-bpstyle\" data-k=\"bpstyle\" value=\"coupled\"><span data-tr>R\u00e9sonateurs coupl\u00e9s<\/span><\/label><\/div>      <\/fieldset>\n\n      <fieldset class=\"fhf-field\" data-when=\"dip,trip\">\n        <legend data-tr>Fr\u00e9quences des voies<\/legend>\n        <div class=\"fhf-seg \"><label><input type=\"radio\" name=\"fhf1-muxkind\" data-k=\"muxkind\" value=\"comp\" checked><span data-tr>Croisements<\/span><\/label><label><input type=\"radio\" name=\"fhf1-muxkind\" data-k=\"muxkind\" value=\"guard\"><span data-tr>Bandes de garde<\/span><\/label><\/div>      <\/fieldset>\n\n      <fieldset class=\"fhf-field\" data-when=\"filter,dip:guard,trip:guard\">\n        <legend data-tr>R\u00e9ponse<\/legend>\n        <div class=\"fhf-seg \"><label><input type=\"radio\" name=\"fhf1-family\" data-k=\"family\" value=\"butterworth\" checked><span data-tr>Butterworth<\/span><\/label><label><input type=\"radio\" name=\"fhf1-family\" data-k=\"family\" value=\"chebyshev\"><span data-tr>Tchebychev<\/span><\/label><label><input type=\"radio\" name=\"fhf1-family\" data-k=\"family\" value=\"cauer\"><span data-tr>Cauer<\/span><\/label><\/div>      <\/fieldset>\n\n      <div class=\"fhf-field\" data-when=\"filter,dip:guard,trip:guard\" data-cheb>\n        <label class=\"fhf-label\" for=\"fhf1-ripple\" data-tr>Ondulation dans la bande<\/label>\n        <select id=\"fhf1-ripple\" data-k=\"ripple\">\n          <option value=\"0.01\" data-tr>0,01 dB<\/option>\n          <option value=\"0.05\" data-tr>0,05 dB<\/option>\n          <option value=\"0.1\" selected data-tr>0,1 dB<\/option>\n          <option value=\"0.2\" data-tr>0,2 dB<\/option>\n          <option value=\"0.5\" data-tr>0,5 dB<\/option>\n          <option value=\"1\" data-tr>1 dB<\/option>\n          <option value=\"auto\" data-tr>Auto : adapte entr\u00e9e et sortie<\/option>\n        <\/select>\n      <\/div>\n\n      <div class=\"fhf-field\" data-when=\"filter,dip:guard,trip:guard\" data-cauer>\n        <label class=\"fhf-label\" for=\"fhf1-as\" data-tr>Att\u00e9nuation minimale en bande coup\u00e9e<\/label>\n        <select id=\"fhf1-as\" data-k=\"as\">\n          <option value=\"30\" data-tr>30 dB<\/option>\n          <option value=\"40\" data-tr>40 dB<\/option>\n          <option value=\"50\" selected data-tr>50 dB<\/option>\n          <option value=\"60\" data-tr>60 dB<\/option>\n          <option value=\"70\" data-tr>70 dB<\/option>\n          <option value=\"80\" data-tr>80 dB<\/option>\n        <\/select>\n      <\/div>\n\n      <div class=\"fhf-field\">\n        <label class=\"fhf-label\" for=\"fhf1-order\" data-tr>Ordre (nombre de cellules)<\/label>\n        <div class=\"fhf-stepper\">\n          <button type=\"button\" data-act=\"dec\" aria-label=\"Diminuer l\u2019ordre\">\u2212<\/button>\n          <input id=\"fhf1-order\" type=\"text\" data-k=\"order\" value=\"5\" readonly>\n          <button type=\"button\" data-act=\"inc\" aria-label=\"Augmenter l\u2019ordre\">+<\/button>\n        <\/div>\n        <small class=\"fhf-hint\" data-order-note hidden><\/small>\n      <\/div>\n\n      <div class=\"fhf-field\" data-when=\"filter:lp,filter:hp,dip:comp\"><label class=\"fhf-label\" for=\"fhf1-fc\" data-labels=\"{&quot;default&quot;:&quot;Fr\\u00e9quence de coupure (MHz)&quot;,&quot;dip&quot;:&quot;Fr\\u00e9quence de croisement (MHz)&quot;}\">Fr\u00e9quence de coupure (MHz)<\/label><input id=\"fhf1-fc\" type=\"text\" inputmode=\"decimal\" data-k=\"fc\" value=\"8\"><\/div><div class=\"fhf-pair\" data-when=\"filter:bp,filter:bs\"><div class=\"fhf-field\"><label class=\"fhf-label\" for=\"fhf1-f1\" data-labels=\"{&quot;default&quot;:&quot;D\\u00e9but de bande (MHz)&quot;,&quot;filter:bs&quot;:&quot;D\\u00e9but de coupure (MHz)&quot;}\">D\u00e9but de bande (MHz)<\/label><input id=\"fhf1-f1\" type=\"text\" inputmode=\"decimal\" data-k=\"f1\" value=\"6\"><\/div><div class=\"fhf-field\"><label class=\"fhf-label\" for=\"fhf1-f2\" data-labels=\"{&quot;default&quot;:&quot;Fin de bande (MHz)&quot;,&quot;filter:bs&quot;:&quot;Fin de coupure (MHz)&quot;}\">Fin de bande (MHz)<\/label><input id=\"fhf1-f2\" type=\"text\" inputmode=\"decimal\" data-k=\"f2\" value=\"8\"><\/div><\/div><div class=\"fhf-pair\" data-when=\"dip:guard\"><div class=\"fhf-field\"><label class=\"fhf-label\" for=\"fhf1-g1\" data-tr>Fin de la voie passe-bas (MHz)<\/label><input id=\"fhf1-g1\" type=\"text\" inputmode=\"decimal\" data-k=\"g1\" value=\"7,3\"><\/div><div class=\"fhf-field\"><label class=\"fhf-label\" for=\"fhf1-g2\" data-tr>D\u00e9but de la voie passe-haut (MHz)<\/label><input id=\"fhf1-g2\" type=\"text\" inputmode=\"decimal\" data-k=\"g2\" value=\"14\"><\/div><\/div><div class=\"fhf-pair\" data-when=\"trip:guard\"><div class=\"fhf-field\"><label class=\"fhf-label\" for=\"fhf1-t1\" data-tr>Fin de la voie passe-bas (MHz)<\/label><input id=\"fhf1-t1\" type=\"text\" inputmode=\"decimal\" data-k=\"t1\" value=\"4\"><\/div><div class=\"fhf-field\"><label class=\"fhf-label\" for=\"fhf1-t4\" data-tr>D\u00e9but de la voie passe-haut (MHz)<\/label><input id=\"fhf1-t4\" type=\"text\" inputmode=\"decimal\" data-k=\"t4\" value=\"18\"><\/div><div class=\"fhf-field\"><label class=\"fhf-label\" for=\"fhf1-t2\" data-tr>D\u00e9but de la voie passe-bande (MHz)<\/label><input id=\"fhf1-t2\" type=\"text\" inputmode=\"decimal\" data-k=\"t2\" value=\"6,9\"><\/div><div class=\"fhf-field\"><label class=\"fhf-label\" for=\"fhf1-t3\" data-tr>Fin de la voie passe-bande (MHz)<\/label><input id=\"fhf1-t3\" type=\"text\" inputmode=\"decimal\" data-k=\"t3\" value=\"14,4\"><\/div><\/div><div class=\"fhf-pair\" data-when=\"trip:comp\"><div class=\"fhf-field\"><label class=\"fhf-label\" for=\"fhf1-x1\" data-tr>Croisement bas (MHz)<\/label><input id=\"fhf1-x1\" type=\"text\" inputmode=\"decimal\" data-k=\"x1\" value=\"6\"><\/div><div class=\"fhf-field\"><label class=\"fhf-label\" for=\"fhf1-x2\" data-tr>Croisement haut (MHz)<\/label><input id=\"fhf1-x2\" type=\"text\" inputmode=\"decimal\" data-k=\"x2\" value=\"16\"><\/div><\/div><div class=\"fhf-pair\" data-when=\"filter\"><div class=\"fhf-field\"><label class=\"fhf-label\" for=\"fhf1-rs\" data-tr>Entr\u00e9e (\u03a9)<\/label><input id=\"fhf1-rs\" type=\"text\" inputmode=\"decimal\" data-k=\"rs\" value=\"50\"><\/div><div class=\"fhf-field\"><label class=\"fhf-label\" for=\"fhf1-rl\" data-tr>Sortie (\u03a9)<\/label><input id=\"fhf1-rl\" type=\"text\" inputmode=\"decimal\" data-k=\"rl\" value=\"50\"><\/div><\/div><div class=\"fhf-field\" data-when=\"dip,trip\"><label class=\"fhf-label\" for=\"fhf1-rc\" data-tr>Port commun, antenne (\u03a9)<\/label><input id=\"fhf1-rc\" type=\"text\" inputmode=\"decimal\" data-k=\"rc\" value=\"50\"><\/div><div class=\"fhf-pair\" data-when=\"dip,trip\"><div class=\"fhf-field\"><label class=\"fhf-label\" for=\"fhf1-rlp\" data-tr>Port passe-bas (\u03a9)<\/label><input id=\"fhf1-rlp\" type=\"text\" inputmode=\"decimal\" data-k=\"rlp\" value=\"50\"><\/div><div class=\"fhf-field\"><label class=\"fhf-label\" for=\"fhf1-rhp\" data-tr>Port passe-haut (\u03a9)<\/label><input id=\"fhf1-rhp\" type=\"text\" inputmode=\"decimal\" data-k=\"rhp\" value=\"50\"><\/div><\/div><div class=\"fhf-field\" data-when=\"trip\"><label class=\"fhf-label\" for=\"fhf1-rbp\" data-tr>Port passe-bande (\u03a9)<\/label><input id=\"fhf1-rbp\" type=\"text\" inputmode=\"decimal\" data-k=\"rbp\" value=\"50\"><\/div>\n      <div class=\"fhf-field\" data-when=\"filter:bp\" data-coupled>\n        <label class=\"fhf-label\" for=\"fhf1-lres\" data-tr>Inductance des r\u00e9sonateurs (\u00b5H)<\/label>\n        <input id=\"fhf1-lres\" type=\"text\" inputmode=\"decimal\" data-k=\"lres\" value=\"\" placeholder=\"auto\">\n        <small class=\"fhf-hint\" data-tr>Vide = automatique (r\u00e9actance \u00e9gale \u00e0 l\u2019imp\u00e9dance d\u2019entr\u00e9e). Toutes les selfs sont identiques.<\/small>\n      <\/div>\n\n      <fieldset class=\"fhf-field\" data-when=\"filter\" data-notcoupled>\n        <legend data-tr>Premier \u00e9l\u00e9ment c\u00f4t\u00e9 entr\u00e9e<\/legend>\n        <div class=\"fhf-seg \"><label><input type=\"radio\" name=\"fhf1-first\" data-k=\"first\" value=\"shunt\" checked><span data-tr>\u00c0 la masse<\/span><\/label><label><input type=\"radio\" name=\"fhf1-first\" data-k=\"first\" value=\"series\"><span data-tr>En s\u00e9rie<\/span><\/label><\/div>      <\/fieldset>\n\n      <fieldset class=\"fhf-field fhf-group-real\">\n        <legend data-tr>Composants r\u00e9els<\/legend>\n        <div class=\"fhf-pair\">\n          <div class=\"fhf-field\"><label class=\"fhf-label\" for=\"fhf1-q\" data-tr>Q des selfs<\/label><input id=\"fhf1-q\" type=\"text\" inputmode=\"numeric\" data-k=\"q\" value=\"200\"><\/div>          <div class=\"fhf-field\"><label class=\"fhf-label\" for=\"fhf1-qc\" data-tr>Q des condensateurs<\/label><input id=\"fhf1-qc\" type=\"text\" inputmode=\"numeric\" data-k=\"qc\" value=\"1000\"><\/div>          <div class=\"fhf-field\"><label class=\"fhf-label\" for=\"fhf1-esl\" data-tr>L parasite des condensateurs (nH)<\/label><input id=\"fhf1-esl\" type=\"text\" inputmode=\"decimal\" data-k=\"esl\" value=\"3\"><\/div>          <div class=\"fhf-field\"><label class=\"fhf-label\" for=\"fhf1-cp\" data-tr>C parasite des selfs (pF)<\/label><input id=\"fhf1-cp\" type=\"text\" inputmode=\"decimal\" data-k=\"cp\" value=\"1\"><\/div>        <\/div>\n        <small class=\"fhf-hint\" data-tr>0 = id\u00e9al. Rep\u00e8res : self sur tore Q 100 \u00e0 250 et 1 \u00e0 3 pF ; condensateur C0G ou mica Q 1000 \u00e0 5000 ; L parasite 1 nH en CMS, 3 nH en radial, 5 nH en axial (ajust\u00e9e automatiquement selon le montage choisi).<\/small>\n      <\/fieldset>\n\n      <div class=\"fhf-field\">\n        <label class=\"fhf-label\" for=\"fhf1-eser\" data-tr>Condensateurs<\/label>\n        <select id=\"fhf1-eser\" data-k=\"eser\">\n          <option value=\"exact\" data-tr>Valeurs exactes<\/option>\n          <option value=\"E12\" data-tr>Arrondis \u00e0 la s\u00e9rie E12<\/option>\n          <option value=\"E24\" selected data-tr>Arrondis \u00e0 la s\u00e9rie E24<\/option>\n        <\/select>\n      <\/div>\n\n      <div class=\"fhf-field\">\n        <label class=\"fhf-label\" for=\"fhf1-mount\" data-tr>Montage des condensateurs<\/label>\n        <select id=\"fhf1-mount\" data-k=\"mount\">\n          <option value=\"radial\" selected data-tr>Traversant radial<\/option>\n          <option value=\"axial\" data-tr>Traversant axial<\/option>\n          <option value=\"smd\" data-tr>CMS grand format (1206 \u00e0 2220)<\/option>\n        <\/select>\n      <\/div>\n\n      <div class=\"fhf-field\"><label class=\"fhf-label\" for=\"fhf1-power\" data-tr>Puissance (W PEP)<\/label><input id=\"fhf1-power\" type=\"text\" inputmode=\"decimal\" data-k=\"power\" value=\"100\"><\/div>\n      <fieldset class=\"fhf-field\">\n        <legend data-tr>TOS pour le dimensionnement<\/legend>\n        <div class=\"fhf-seg \"><label><input type=\"radio\" name=\"fhf1-tos\" data-k=\"tos\" value=\"1\"><span data-tr>1<\/span><\/label><label><input type=\"radio\" name=\"fhf1-tos\" data-k=\"tos\" value=\"2\"><span data-tr>2<\/span><\/label><label><input type=\"radio\" name=\"fhf1-tos\" data-k=\"tos\" value=\"3\"><span data-tr>3<\/span><\/label><label><input type=\"radio\" name=\"fhf1-tos\" data-k=\"tos\" value=\"4\"><span data-tr>4<\/span><\/label><label><input type=\"radio\" name=\"fhf1-tos\" data-k=\"tos\" value=\"5\"><span data-tr>5<\/span><\/label><\/div>      <\/fieldset>\n    <\/form>\n\n    <div class=\"fhf-results\">\n      <p class=\"fhf-error\" data-error role=\"alert\" hidden><\/p>\n      <div class=\"fhf-out\" data-out>\n        <div class=\"fhf-chips\" data-chips aria-live=\"polite\"><\/div>\n\n        <figure class=\"fhf-card fhf-plot\">\n          <div class=\"fhf-plot-head\">\n            <span class=\"fhf-pview\" data-when=\"dip,trip\"><div class=\"fhf-seg fhf-seg-sm\"><label><input type=\"radio\" name=\"fhf1-pview\" data-k=\"pview\" value=\"ant\" checked><span data-tr>Vers l\u2019antenne<\/span><\/label><label><input type=\"radio\" name=\"fhf1-pview\" data-k=\"pview\" value=\"iso\"><span data-tr>Isolation entre ports<\/span><\/label><\/div><\/span>\n            <span class=\"fhf-label fhf-zoom-label\" data-tr>\u00c9chelle verticale<\/span>\n            <div class=\"fhf-seg fhf-seg-sm\"><label><input type=\"radio\" name=\"fhf1-yzoom\" data-k=\"yzoom\" value=\"80\"><span data-tr>\u221280 dB<\/span><\/label><label><input type=\"radio\" name=\"fhf1-yzoom\" data-k=\"yzoom\" value=\"10\"><span data-tr>\u221210 dB<\/span><\/label><label><input type=\"radio\" name=\"fhf1-yzoom\" data-k=\"yzoom\" value=\"3\"><span data-tr>\u22123 dB<\/span><\/label><label><input type=\"radio\" name=\"fhf1-yzoom\" data-k=\"yzoom\" value=\"1\"><span data-tr>\u22121 dB<\/span><\/label><\/div>          <\/div>\n          <div class=\"fhf-mkvals\" data-mkvals hidden><\/div>\n          <svg data-plot viewBox=\"0 0 640 320\" role=\"img\" aria-label=\"Courbe de r\u00e9ponse\"><\/svg>\n          <figcaption class=\"fhf-plot-foot\">\n            <div class=\"fhf-readout\" data-readout><\/div>\n            <div class=\"fhf-legend\" data-legend><\/div>\n          <\/figcaption>\n          <div class=\"fhf-markers-ui\">\n            <span class=\"fhf-label\" data-tr>Marqueurs (MHz) : cochez pour afficher, \u00ab curseur \u00bb pour placer \u00e0 la position du curseur. Les valeurs s\u2019affichent au-dessus du graphique.<\/span>\n            <div class=\"fhf-mk-list\">\n              <div class=\"fhf-mk\">\n                <label><input type=\"checkbox\" data-mk=\"1\"><span>M1<\/span><\/label>\n                <input type=\"text\" inputmode=\"decimal\" data-mf=\"1\" placeholder=\"MHz\" aria-label=\"Fr\u00e9quence du marqueur M1 en MHz\">\n                <button type=\"button\" data-act=\"mset\" data-i=\"1\" aria-label=\"Placer M1 \u00e0 la position du curseur\" data-tr>curseur<\/button>\n              <\/div>\n              <div class=\"fhf-mk\">\n                <label><input type=\"checkbox\" data-mk=\"2\"><span>M2<\/span><\/label>\n                <input type=\"text\" inputmode=\"decimal\" data-mf=\"2\" placeholder=\"MHz\" aria-label=\"Fr\u00e9quence du marqueur M2 en MHz\">\n                <button type=\"button\" data-act=\"mset\" data-i=\"2\" aria-label=\"Placer M2 \u00e0 la position du curseur\" data-tr>curseur<\/button>\n              <\/div>\n              <div class=\"fhf-mk\">\n                <label><input type=\"checkbox\" data-mk=\"3\"><span>M3<\/span><\/label>\n                <input type=\"text\" inputmode=\"decimal\" data-mf=\"3\" placeholder=\"MHz\" aria-label=\"Fr\u00e9quence du marqueur M3 en MHz\">\n                <button type=\"button\" data-act=\"mset\" data-i=\"3\" aria-label=\"Placer M3 \u00e0 la position du curseur\" data-tr>curseur<\/button>\n              <\/div>\n              <div class=\"fhf-mk\">\n                <label><input type=\"checkbox\" data-mk=\"4\"><span>M4<\/span><\/label>\n                <input type=\"text\" inputmode=\"decimal\" data-mf=\"4\" placeholder=\"MHz\" aria-label=\"Fr\u00e9quence du marqueur M4 en MHz\">\n                <button type=\"button\" data-act=\"mset\" data-i=\"4\" aria-label=\"Placer M4 \u00e0 la position du curseur\" data-tr>curseur<\/button>\n              <\/div>\n              <div class=\"fhf-mk\">\n                <label><input type=\"checkbox\" data-mk=\"5\"><span>M5<\/span><\/label>\n                <input type=\"text\" inputmode=\"decimal\" data-mf=\"5\" placeholder=\"MHz\" aria-label=\"Fr\u00e9quence du marqueur M5 en MHz\">\n                <button type=\"button\" data-act=\"mset\" data-i=\"5\" aria-label=\"Placer M5 \u00e0 la position du curseur\" data-tr>curseur<\/button>\n              <\/div>\n            <\/div>\n          <\/div>\n        <\/figure>\n\n        <section class=\"fhf-card\">\n          <h3 class=\"fhf-h3\" data-tr>Analyse de vos choix<\/h3>\n          <ul class=\"fhf-analysis\" data-analysis><\/ul>\n        <\/section>\n\n        <figure class=\"fhf-card fhf-schema\">\n          <div class=\"fhf-scroll\"><svg data-schema role=\"img\" aria-label=\"Sch\u00e9ma\"><\/svg><\/div>\n        <\/figure>\n\n        <section class=\"fhf-card\">\n          <h3 class=\"fhf-h3\" data-tr>Composants<\/h3>\n          <div class=\"fhf-scroll\">\n            <table class=\"fhf-table\">\n              <thead><tr><th data-tr>\u00c9l\u00e9ment<\/th><th data-tr>Montage<\/th><th data-tr>Calcul\u00e9e<\/th><th data-tr>Retenue<\/th><th data-tr>V cr\u00eate<\/th><th data-tr>I eff.<\/th><th data-tr>Pertes<\/th><th data-tr>R\u00e9alisation<\/th><\/tr><\/thead>\n              <tbody data-rows><\/tbody>\n            <\/table>\n          <\/div>\n          <div class=\"fhf-note\" data-note><\/div>\n          <button type=\"button\" class=\"fhf-btn\" data-act=\"copy\" data-tr>Copier les valeurs<\/button>\n        <\/section>\n\n        <section class=\"fhf-card\">\n          <h3 class=\"fhf-h3\" data-tr>Liste d\u2019achat<\/h3>\n          <div class=\"fhf-scroll\">\n            <table class=\"fhf-table\">\n              <thead><tr><th data-tr>Quantit\u00e9<\/th><th data-tr>Article<\/th><th data-tr>Caract\u00e9ristiques<\/th><th data-tr>Rep\u00e8res<\/th><th data-tr>Recherche<\/th><\/tr><\/thead>\n              <tbody data-buy><\/tbody>\n            <\/table>\n          <\/div>\n          <p class=\"fhf-note\" data-tr>Les composants identiques sont regroup\u00e9s. La longueur de fil inclut 2 \u00d7 5 cm de sorties par self. Les tores fer poudre se trouvent surtout chez les revendeurs radioamateurs.<\/p>\n          <button type=\"button\" class=\"fhf-btn\" data-act=\"csv\" data-tr>T\u00e9l\u00e9charger la liste (CSV)<\/button>\n        <\/section>\n\n        <section class=\"fhf-card\">\n          <h3 class=\"fhf-h3\" data-tr>Tenue en puissance<\/h3>\n          <div class=\"fhf-scroll\">\n            <table class=\"fhf-table fhf-sum\">\n              <thead><tr><th data-tr>TOS<\/th><th data-tr>Tension cr\u00eate maximale<\/th><th data-tr>Courant efficace maximal<\/th><\/tr><\/thead>\n              <tbody data-sum><\/tbody>\n            <\/table>\n          <\/div>\n          <div class=\"fhf-note\" data-advice><\/div>\n        <\/section>\n      <\/div>\n    <\/div>\n  <\/div>\n<\/div>\n    \n\n\n\n<p class=\"wp-block-paragraph\"><strong>@Bob with Claude AI<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Let&rsquo;s go to desgin RF filters for our HF station. A user guide is available on this page if needed: HF Filter Calculator User Guide. @Bob with Claude AI<\/p>\n","protected":false},"author":2,"featured_media":233,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-242","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/rf-diy.com\/index.php\/wp-json\/wp\/v2\/posts\/242","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/rf-diy.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/rf-diy.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/rf-diy.com\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/rf-diy.com\/index.php\/wp-json\/wp\/v2\/comments?post=242"}],"version-history":[{"count":3,"href":"https:\/\/rf-diy.com\/index.php\/wp-json\/wp\/v2\/posts\/242\/revisions"}],"predecessor-version":[{"id":249,"href":"https:\/\/rf-diy.com\/index.php\/wp-json\/wp\/v2\/posts\/242\/revisions\/249"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/rf-diy.com\/index.php\/wp-json\/wp\/v2\/media\/233"}],"wp:attachment":[{"href":"https:\/\/rf-diy.com\/index.php\/wp-json\/wp\/v2\/media?parent=242"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/rf-diy.com\/index.php\/wp-json\/wp\/v2\/categories?post=242"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/rf-diy.com\/index.php\/wp-json\/wp\/v2\/tags?post=242"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}